On That Shining Star

When Addie moves into town to escape from her mother's death with her father that is practically never there she meets incredible friends. Sharon, the girl that becomes Addie's best friend, Chance, the comedic relief of the group, Ava, a girl that gives absolutely no fucks, Porter, Ava's boyfriend (?) and Aiden, the guy that Addie finds extremely attractive and cannot keep herself from finding out more about him.

What happens when Addie finds out that most of her friends are keeping a really big secret from her? Can she forgive them? Also, what happened to Addie's older brother that has been out of the radar for about ten years? What is her family actually hiding?